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glamor: Add glamor_transfer based glamor_get_image and glamor_put_image

Browse source 
These use the upload_boxes and download_boxes helpers to provide
reasonably efficient image transfer.

Fixes segfaults in Xephyr with x11perf -reps 1.

Performance improvements:

Improves -putimage10 by 548.218% +/- 88.601% (n=10).
Improves -putimage500 by 3.71014% +/- 1.5049% (n=10).
Improves -getimage10 by 8.37004% +/- 4.58274% (n=10).
No statistically significant difference on -getimage500 (n=10).

v2: Fix rebase failures, don't forget to check/prepare the gc in
    putimage fallbacks (changes by anholt).

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Keith Packard 2014-03-16 20:44:48 -07:00 • committed by Eric Anholt
commit 5062b4fadd
6 changed files with 190 additions and 275 deletions
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2
glamor/glamor.c
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@ -507,7 +507,6 @@ glamor_init(ScreenPtr screen, unsigned int flags)
#ifdef GLAMOR_TRAPEZOID_SHADER
glamor_init_trapezoid_shader(screen);
#endif
glamor_init_putimage_shaders(screen);
glamor_init_finish_access_shaders(screen);
#ifdef GLAMOR_GRADIENT_SHADER
glamor_init_gradient_shader(screen);
@ -541,7 +540,6 @@ glamor_release_screen_priv(ScreenPtr screen)
#ifdef GLAMOR_TRAPEZOID_SHADER
glamor_fini_trapezoid_shader(screen);
#endif
glamor_fini_putimage_shaders(screen);
glamor_fini_finish_access_shaders(screen);
#ifdef GLAMOR_GRADIENT_SHADER
glamor_fini_gradient_shader(screen);